Automatic gas-burner.



G. R. CLARK.

AUTOMATIC GAS BURNER.

APPLICATION rum) 1mm, 191a.

1,070,01 6. Patented Aug. 12, 1913;

1 I V F J] a.

CLIFFCR-D R. CLARK, OF NEW HAVEN, CONNECTICUT, ASSIGNOR 0F ONE-HALF TO FREEMAN I. CLARK, OF NEW HAVEN, CONNECTICUT.

AUTOMATIC GAS-BURNER.

Specification of Letters Patent.

Application fi1ed Apri1 5, 1913.

Patented Aug. 12, 1913.

Serial No. 759,163.

State of Connecticut, have invented -a new and useful Improvement in Automatic Gas- Burners; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full, clear, and exact description of the same, and which said drawings constitute part of this application, and represent, in

Figure 1 a front view of a burnerconstructed in accordance with my invention. Fig. 2 a similar view with the cap and valve removed. Fig. 3 a view in vertical section showing the burner in the closed position. Fig. 4 a similarview showing the burner in the open position. Fig. 5 a front view of the valve detached. Fig. 6 a plan view of the valve-spring.

This invention relates to an improvement in automatic gas burners, that is, burners which when extinguished without turning ofi' the supply of gas will automatically close the valve to prevent the escape of gas, the object being a simple -arrangement of parts which will work automatically; and the invention consists in the construction hereinafter described and'particularly recited in the claim.

Incarrying out my invention, I employ a circular body formed at its lower end with an internally threaded stem 3 adapted to be turned onto the nipple of the gas-supply pipe not shown. The upper'end.4= is can ternally threaded to receive a burner tip 5 of any a proved construction. The body 2 is provi ed with a substantially centrally arranged wall 6, and one side is closed by a plate 7 forming a gas-passage 8. The other side is closed by a ca 9 which is preferably bowed outward, t is-cap being held in place by being threadedinto thev central opening of the body. Connected withthe cap is a flexible diaphragm 10. In the cap is an opening 11 closed by a plug 12 through which 0 enlng ether or other material having a ow boilingpoint may be introduced, the opening being afterward sealed by the plug 12. In the wall 2 are ports 13 which are closed by a flat valve 14 the stem 15 of which passes through a hole 16 formed for it in the plate. The other end of the stem has an arm 17 attached to it, this aim bears upon a bowed spring 18 whlch has a clearance slot 19 for the stem 15, the ends of the spring bearing against the outer face of the wall 6, the tendency of the spring being to draw the A valve 14 "against the inner face of the wall 6 and so as to clpse the ports 13. The supply of gas entering the burner enters the passage 8 between the inner wall 6 and the plate 7 and escapes to the burner from the space between the outer face of the wall 6 and the diaphragm 10. Secured to the outer face of the cap 9 is a conductor bar 20 the upper end of which stands adjacent to the burner up 21. In the normal condition the did .phragin will be bowed outward so as to stand substantially parallel. with the cap 9,

and preparatory to lighting the gas heat will be applied to the cap by holding a match close to the lower end of the condoctor 20, but comparatively little heat will be required to expand'the ether between the cap and diaphragm so as to cause the diaphragm to move rearward, and pressing aga nst the arm 17 force the valve 14 away from the wall 6' so as to open the ports 13. The gas may then freely pass to the burner tip and be ignited, and the heat from the gas will be carried by the conductor so as to maintain the necessary heat on the cap to keep the ether expanded and thus the burner will remain open. If, however, the lightshould be accidentally extinguished, or extinguished without turning off the source of supply, the ether will rapidly cool allowmg the diaphragm to move forward and permit the spring 18 to force the valve 14 into its closed osition, thus cutting ed the flow of gas to t e burner tip.

I claim A burner comprising a central portion adapted to be attached to a supply pipe, a burner tip applied to the upper end of the body, a vertically arranged wall in the body, a assage itrom the bottom opening to one si e of the wall and a assage to the burner at the opposite side 0 the said wall, ports in said Wall, a plate connected with the rear of the body and forming a passage between the plate and wall, a cap connected with the front of the body and forming a chamber between it and the front face of said wall, a diaphragm connected with said cap and forming a chamber between them, a valve between the wall and plate and adapted to close ports in the Wall, said valve formed with a stem extending through the wall, in arm connected with the said stem, a spring 5 bet ween the stem and outer face of the Wall,

said spring normally tending to hold the valve in a closed position, a conductor connected with said cap and extending upward to a point adjacent to the burnertip, and an 10 expansive fluid between the cap and diaphragm adapted when heated to expand the ing witnesses.

CLIFFORD R. CLARIC Witnesses: v

Fnnmamo-C. EARLE,

CLARA L. WEED. 

